Hello doctor, my 2 years 3 months son is passing stools frequently (4 - 5 times a day). His stool examination showed reducing substances present+. 6 months back he suffered from viral infection, after that he has this problem. 3 times check up has been done in that reducing substances present +came. He was on antibiotics and diet was also changed but there is no improvement. Please tell me what will be possible causes and kindly treat his problem.